Question

37K miles, 2010 Ford Fusion 6 cylinder. This happens in city and highway driving from time to time. Acts as if it's down to last drop of gas and jerks and bucks. Engine seems to have no power, staying on accelerator doesn't help.

Pull over and turn ignition off, turn back on after a few seconds and car starts and runs as if there never was a problem - until the next time it acts up. This happens only sporadically.

Used car dealer says it's the throttle body; cleaned it, but several weeks later the problem showed up again, and has several times since. Thoughts?

There was a TSB issued to dealers about a similar problem---don't know if it applies to your car or not, but have a look:

TSB 11-3-22

03/16/11

DRIVEABILITY SYMPTOMS WITHOUT DTCS OR

DRIVEABILITY SYMPTOMS WITH DTC P144A, P2196,

P2198, P1450, P0456-BUILT ON OR BEFORE

3/4/2011

FORD:

2010-2011 Fusion

2009-2011 Escape

MERCURY:

2010-2011 Milan

2009-2011 Mariner

ISSUE

Some 2009-2011 Escape, Mariner, 2010-2011 Fusion and Milan vehicles equipped with a 2.5L or 3.OL engine built on or before 03/04/2011 may experience a leaking/stuck canister purge valve. This condition may cause various intermittent driveability symptoms without any diagnostic trouble codes (DTC). The condition may also cause driveability symptoms with malfunction indicator light on with DTCs P144A, P2196, P2198, P1450, or P0456.